Metal-cutting machine



Jan. 12 1926.

J. TEMPLE METAL CUTTING MACHINE Filed March 2 2 Sheets-Sheet 1 alitozmq J- TEMPLE METAL 'CUTTING MACHINE Filed Maron 2, 1925 2 sheets-sheet z;

JAMES TEMPLE.

@Hoz m Jamas 'rEMPLEQoF PORTLAND, OREGON.

PAT-ENT OFFICE.

METAL-culmine MACHINE.

Application filed March 2, 1925. Serial No. 12,803. p

To all 'whom it may concern: i Be it hereby known that I, J AMES TEMPLE,

i a citizen of the United States, and a resident of Portland, in the county of Multnol mah and State. ef Oregon, have invented a new and useful Metal-Cutting Machine, of which the following is a specification.

This invention relates generally to the art ofcutting metals Jwith the use of a gas torch, and partlcularly to a machine for accorn- .plishing this purpose. i

The objects of this invention are to produce an exceedingly simple' and etlicient, as well as light, cutting machine in which the eye strain always present when torches are used by hand is entirely eliminated.

The second object is to savetime by elimi nating the strains on eyesand muscles which ordinarily require the operator to stop cutting at frequent intervals in order to rest.

The third object is to cut metals alongex tremely straight, smooth and narrow lines in order that the plates so cut can be joined without furtherniresslng in a planer or other hi`ne. .The fourth object is toreduce the amount of gas consumed, since the cutxis made in an exceedin ly straight and narrow line permitting he use 'of a smaller tip than is reuired for hand-held torches, and also by reuci'ng the timber of, stopsmade ina given len hof cut. r,

T e fifth object is to so accurately and smoothly cut the ed es of a plate-that no furtherl trimming will be re uired, and to so reduce the amount of burr ormed that its removal will be a comparatively easy tasl.

The sixth object is to rovide a means for varying the cutting spee to correspond with forthe feed automatic, as far vas starting Athe job being handled, as well 'as to suit the varying cutting resistance of a given plate without stopping the motor, and also to enable the cut to be made in .three directions-- that is, forward or backward or perpendicula:` thereto. Y

The seventh object is Ato make the control after cutting has begun-and stopping the machine before the "cutting has stoppe The. eighth object is to combine the cutting gas control with the motor'control.

' These results are obtained inthe manner vset forth in the following specification as illustrate'din the accompanying drawings, in

-F gure 1 is a plan ofthe device of which the shaft 22.

the bedv 13 are secured thestandards .2,8, 29,. and 30 which carry the lsplined shaft,y 31 and its worm 32 which meshes with the Figure 2 is a front elevation with the torch removed and Figure@ is a vert1ca section tak/en along the line 3--3 in Figure 2. Figure' 4' is an enlarged front elevation of the torch showing themotor control in diagram. Figure 5 is an end elevation of Figure 4.7

tSimilar numbers of reference refer to the same arts throughout the several views.

Re erring in detail tothe drawings, the devicey is mounted on a channel iron track 10 which actsas a straight edge which oro dinarily rests on the lplate 11, which isbeingcut. The plate 11 4is,.for the sake of illustration, placed across kthe horses 12. On the track 10 is placed a carriage havin a bed 13,.and ywheels 14 and 15. On -the ged 13 is placeda motor 16 whose shaft 17 is.

coupled to the wormfshaft- 18 supported at its outer end by 'the bearing-19. The worm 20 meshes with'the worm wheel 2l on the transverse shaft 22 which journals in the earln'gs A23 and 24. On the shaft 22 is b -Elaced a collar'25. A spring 26 is placed etween the collar 25 and the bearing 24. A yfriction disk 27 is mounted on the end of worm wheel 33. on the axle 34 secured in the wheels 14. A feed screw 35 is alsocarried by the standards 28, 29 and 30 and is provlded with a crank 36, a collar 37 and a nut 38. On the feed screw 35 is placed a tapped arm 39 having a fork 40 which engagesthe grooved hub 41 of the friction wheel 42 which 4engages the disk 27.

Onlthe bed 13 is als/o `mounted a vertical guide 44 provided with a feed screw 45 havmg a hand'wheel 46.` Upon the guide 44 is placed a nslide 47. Through the slide 47 is slidabl laced an arm-48 having a rack 9 foi-me y the rack49 and is rotated by means ofthe hand wheel 51 which is mounted in the slide .-47. The clampingscrew 52 for the arm 48 is 4rovided w1th a hand wheel 53.

n 'the outer end ofthe arm 48 is pivotally attached a pair of arms 54 through whose, spaced -ends l55are placed the pipes of the cuttlng torch 56. .7 o.

It must be understood 'that this/torch may be of any desired type suitable for the urpose, andmay .be either the Oxy-acetylene torch or the oxyhydrogen torch. 4 o In this case we have illustrated the usual acteylene t ereon. A pinion 50neshes wi h\ plate the carriage is moved by han `to the startingl position at the ed e of the plate w ich the track is 'careillyplaced parel to the line of a cut about to be made. The .pre-heating llame is now applied and the torch tipv brought to the correctposlpossible consistent with good cutting by,

tion" relative to the plate, under the contro of the screw 45.'

As soon as the metal starts to flow thisi lever 63 is moved to admit the cutting oxygen to the tip and further movement ofthe 26; eve'rwill close the motor circuit through the plate 65. The lmotor now drives the carriage forward at a speed depending upon the position of the friction wheel 42 with relation to the disk 27. This speed is made as high as manipulating the crank 36. Passing' the center of the disk 27 naturally reverses the carriage.

If it is desired to finish the cut at right angles tothe line just taken, the lever 63 is moved away from the plate 65 but not suiiiciently far to stop the ilow of cutting oxygen.

The hand feed wheel 51 is then used to move the torch in the desired direction. 4

If it is desired to'bevel the edge of the late while cutting it is only vnecessary to incline thetorch on its pivot on the arm 48I and proceed as before. l'The bevel, of cou-rse; can be made in either direction, that is, to or from the track.

Itl is' evident that when once the track is placed parallel to the line to be-cut and the cut is started that the operator need only concern himself with adjusting the feed of the carriage to the maximum consistent with good cutting. All ofthe labor and strain, with possible injury to the eye o-f the operator, is eliminated.

In many instances beveled edges are required which under the hand system is attained by rst cutting the plate off with the torch and then beveling the edge in a planer.

Owing to the fact that it is possible to make a cut with this machine as smooth as can be made with a planer, it is evident that one need only to turn the flame to the proper angle to secure the desired bevel. f

It'is also evident that a variable s eed motor can be employed instead of the sli ing friction device, and that yinstead of the channel iron track being emplo ed a curved track may be constructed to t aparticular j shape of plate it is desired to cut, or the track may be Adispensed with entirel and the carriage guided in a circular path b uise of a radius rod, tlie use of which is well understood by the ordinaryN mechanic.

These, and other minor changes, can readily be 'effected without `departing from the -spirit of my invention. l j 3 I am aware that large and expensive forms of cutting machines have bee'n constructed in the past. I therefore do not intend to cover such forms of'machines broadly but I dol intend to cover all such forms and modifications as fall fairly within the appended claim.

.I claim: v v 'Al carriage for metal .cutting machines having in combinationE a wheeled frame; a motor on said frame; av worm shaft extending from the shaft of said motor; a worm on said worm shaft; a spring-urgedslideable transverse shaft mounted on said frame; a ,Worm Wheel on said transverse shaft meshing with said worm;a friction disk on said transverse shaft a splined shaft mounted on said frame alongside of said disk; a 'friction pinion on the spline of said splined shaft: a feed screw for moving4 saidpinion along the face ofsaidl disk; means -for rotating`said screw anddriving gears between said'splined v`shaft and the wheels of said frame.

JAMES TEMPLE.

y the 

